In article <00017FBA.1959 at cancercare.on.ca>, Hoyun_Lee at cancercare.on.ca wrote:
> We are considering to purchase an "ultra-low freezer" to replace our
> liquid N2-based cell-storage tank. The freezer, therefore, should be
> able to go down to -150 degree C or lower. I would appreciate very
> much if someone can advise me on this.
>> Hoyun Lee, Ph.D.
> Career Scientist/Asst. Prof.
> NE Ontario Cancer Centre
>> Phone: (705) 523-7312 ext. 2703.
> E-mail: Hoyun Lee at cancercare.on.ca
We have a -140 C chest freezer, labeled on the front as a Cryostar. I
don't know if that's the manufacturer's name or a model number. In either
case, it has worked fine for about 5 years (knock on virtual wood), and is
certainly a lot more convenient than the liquid N2 contraptions. Cells and
tissues stored at this temperature seem to keep well.
Pam Norton
--
Pamela A. Norton, Ph.D. Associate Professor of Medicine
Thomas Jefferson University
Philadelphia, PA 19107 p_norton at lac.jci.tju.edu